Update dependency auto-PR message

[ml-evs]

Closes #988.

[CasperWA]

Cheers.
Minor fix for the temporary branch name in the URL.
Otherwise, good-to-go.

[codecov]

Codecov Report

Merging #989 (817bb94) into master (734d4bf) will not change coverage.
The diff coverage is n/a.

❗ Current head 817bb94 differs from pull request most recent head 424482f. Consider uploading reports for the commit 424482f to get more accurate results

@@           Coverage Diff           @@
##           master     #989   +/-   ##
=======================================
  Coverage   92.91%   92.91%           
=======================================
  Files          67       67           
  Lines        3780     3780           
=======================================
  Hits         3512     3512           
  Misses        268      268           

Flag	Coverage Δ
project	92.91% <ø> (ø)
validator	92.91% <ø> (ø)

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[ml-evs]

Well spotted, thanks. Will just force this one through without another review.